Liquid crystal display device

Liquid crystal cells – elements and systems – Liquid crystal system – Projector including liquid crystal cell

Reexamination Certificate

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

C349S008000, C349S102000

Reexamination Certificate

active

10303950

ABSTRACT:
A liquid crystal display element which has the high speed response and the high contrast and a display device employing the same are provided. In a display device employing a reflection type liquid crystal light valve, a retardation of a retardation plate which is provided between a polarizing element such as a polarizing beam splitter and the reflection type liquid crystal light valve is generally made ¼ of the wavelength of the incident light, and an optical axis (a slow axis or a fast axis) of the retardation plate and the polarizing direction of the incident polarized light are shifted from each other by slightly larger than 0 degree in order to arrange such optical elements.

REFERENCES:
patent: 5327270 (1994-07-01), Miyatake
patent: 5472635 (1995-12-01), Iida et al.
patent: 5490003 (1996-02-01), Van Sprang
patent: 5576854 (1996-11-01), Schmidt et al.
patent: 5737048 (1998-04-01), Abileah et al.
patent: 5973760 (1999-10-01), Dehmlow
patent: 6147727 (2000-11-01), Shigeno
patent: 6340999 (2002-01-01), Masuda et al.
patent: 2002/0159007 (2002-10-01), Suzuki et al.
patent: 61-13885 (1986-01-01), None
patent: 64-7021 (1989-01-01), None
patent: 2-250026 (1990-10-01), None
patent: A-3-130719 (1991-06-01), None
patent: 4-319910 (1992-11-01), None
patent: 10-90731 (1998-04-01), None
Appl. Phys. Lett., vol. 20, No. 5, Mar. 1, 1972, pp. 199-201.
“A New Twisted Nematic ECB (TN-ECB) Mode for a Reflective Light Valve” by T. Sonehara, et al., Japan Display '89, pp. 192-195.
Appl. Phys. Lett., vol. 68, No. 11, Mar. 11, 1996, pp. 1455-1457.
“Normally White Reflective Twisted Nematic Mode for Silicon-Chip-Based Light Valves” by Shoichi Hirota, et al., Part of the IS&T/SPIE Conference on Liquid Crystal Materials, Devices, and Applications VII—San Jose, California—Jan. 1999, pp. 86-94.
“A Silicon-Chip-Based Light Valve with Reflective Twisted Nematic Mode for High-Definition Projectors” by Shoichi Hirota, et al., IDW '99, pp. 985-988.
Hongfei Cheng, et al.—“Analysis of the operation mode of reflective liquid crystal display devices with front film compensation,” Liquid Crystals, 2000, vol. 27, No. 6, pp. 763-766.

LandOfFree

Say what you really think

Search LandOfFree.com for the USA inventors and patents. Rate them and share your experience with other people.

Rating

Liquid crystal display device does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Liquid crystal display device, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Liquid crystal display device will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFUS-PAI-O-3730153

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.